
public class ReactContext
extends ContextWrapper

Abstract ContextWrapper for Android application or activity Context and

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public class`	`ReactContext.ExceptionHandlerWrapper`

Constructor Summary

Constructors
Constructor	Description
`ReactContext(Context base)`

Method Summary

Modifier and Type	Method	Description
`void`	`initializeWithInstance(CatalystInstance catalystInstance)`	Set and initialize CatalystInstance for this Context.
`synchronized void`	`initializeMessageQueueThreads(ReactQueueConfiguration queueConfig)`	Initialize message queue threads using a ReactQueueConfiguration.
`void`	`resetPerfStats()`
`void`	`setNativeModuleCallExceptionHandler(@Nullable() NativeModuleCallExceptionHandler nativeModuleCallExceptionHandler)`
`Object`	`getSystemService(String name)`
`<T extends JavaScriptModule> T`	`getJSModule(Class<T> jsInterface)`
`<T extends NativeModule> boolean`	`hasNativeModule(Class<T> nativeModuleInterface)`
`Collection<NativeModule>`	`getNativeModules()`
`<T extends NativeModule> T`	`getNativeModule(Class<T> nativeModuleInterface)`
`CatalystInstance`	`getCatalystInstance()`
`boolean`	`hasActiveCatalystInstance()`	This API has been deprecated due to naming consideration, please use hasActiveReactInstance()instead
`boolean`	`hasActiveReactInstance()`
`boolean`	`hasCatalystInstance()`
`LifecycleState`	`getLifecycleState()`
`void`	`addLifecycleEventListener(LifecycleEventListener listener)`
`void`	`removeLifecycleEventListener(LifecycleEventListener listener)`
`void`	`addActivityEventListener(ActivityEventListener listener)`
`void`	`removeActivityEventListener(ActivityEventListener listener)`
`void`	`addWindowFocusChangeListener(WindowFocusChangeListener listener)`
`void`	`removeWindowFocusChangeListener(WindowFocusChangeListener listener)`
`void`	`onHostResume(@Nullable() Activity activity)`	Should be called by the hosting Fragment in onResume
`void`	`onNewIntent(@Nullable() Activity activity, Intent intent)`
`void`	`onHostPause()`	Should be called by the hosting Fragment in onPause
`void`	`onHostDestroy()`	Should be called by the hosting Fragment in onDestroy
`void`	`destroy()`	Destroy this instance, making it unusable.
`void`	`onActivityResult(Activity activity, int requestCode, int resultCode, @Nullable() Intent data)`	Should be called by the hosting Fragment in onActivityResult
`void`	`onWindowFocusChange(boolean hasFocus)`
`void`	`assertOnUiQueueThread()`
`boolean`	`isOnUiQueueThread()`
`void`	`runOnUiQueueThread(Runnable runnable)`
`void`	`assertOnNativeModulesQueueThread()`
`void`	`assertOnNativeModulesQueueThread(String message)`
`boolean`	`isOnNativeModulesQueueThread()`
`void`	`runOnNativeModulesQueueThread(Runnable runnable)`
`void`	`assertOnJSQueueThread()`
`boolean`	`isOnJSQueueThread()`
`boolean`	`runOnJSQueueThread(Runnable runnable)`
`void`	`handleException(Exception e)`	Passes the given exception to the current if one exists, rethrowingotherwise.
`NativeModuleCallExceptionHandler`	`getExceptionHandler()`
`boolean`	`hasCurrentActivity()`
`boolean`	`startActivityForResult(Intent intent, int code, Bundle bundle)`	Same as startActivityForResult, this just redirects the call tothe current activity.
`Activity`	`getCurrentActivity()`	Get the activity to which this context is currently attached, or `{@code null}` if not attached.DO NOT HOLD LONG-LIVED REFERENCES TO THE OBJECT RETURNED BY THIS METHOD, AS THIS WILL CAUSEMEMORY LEAKS.
`boolean`	`isBridgeless()`
`JavaScriptContextHolder`	`getJavaScriptContextHolder()`	Get the C pointer (as a long) to the JavaScriptCore context associated with this instance.
`JSIModule`	`getJSIModule(JSIModuleType moduleType)`
`String`	`getSourceURL()`	Get the sourceURL for the JS bundle from the CatalystInstance.
`void`	`registerSegment(int segmentId, String path, Callback callback)`	Register a JS segment after loading it from cache or server, make sure mCatalystInstance isproperly initialised and not null before calling.

Methods inherited from class android.content.ContextWrapper
bindIsolatedService, bindService, bindServiceAsUser, checkCallingOrSelfPermission, checkCallingOrSelfUriPermission, checkCallingOrSelfUriPermissions, checkCallingPermission, checkCallingUriPermission, checkCallingUriPermissions, checkPermission, checkSelfPermission, checkUriPermission, checkUriPermissions, clearWallpaper, createAttributionContext, createConfigurationContext, createContext, createContextForSplit, createDeviceProtectedStorageContext, createDisplayContext, createPackageContext, createWindowContext, databaseList, deleteDatabase, deleteFile, deleteSharedPreferences, enforceCallingOrSelfPermission, enforceCallingOrSelfUriPermission, enforceCallingPermission, enforceCallingUriPermission, enforcePermission, enforceUriPermission, fileList, getApplicationContext, getApplicationInfo, getAssets, getAttributionSource, getAttributionTag, getBaseContext, getCacheDir, getClassLoader, getCodeCacheDir, getContentResolver, getDataDir, getDatabasePath, getDir, getDisplay, getExternalCacheDir, getExternalCacheDirs, getExternalFilesDir, getExternalFilesDirs, getExternalMediaDirs, getFileStreamPath, getFilesDir, getMainExecutor, getMainLooper, getNoBackupFilesDir, getObbDir, getObbDirs, getOpPackageName, getPackageCodePath, getPackageManager, getPackageName, getPackageResourcePath, getParams, getResources, getSharedPreferences, getSystemService, getSystemServiceName, getTheme, getWallpaper, getWallpaperDesiredMinimumHeight, getWallpaperDesiredMinimumWidth, grantUriPermission, isDeviceProtectedStorage, isRestricted, isUiContext, moveDatabaseFrom, moveSharedPreferencesFrom, openFileInput, openFileOutput, openOrCreateDatabase, peekWallpaper, registerReceiver, removeStickyBroadcast, removeStickyBroadcastAsUser, revokeUriPermission, sendBroadcast, sendBroadcastAsUser, sendOrderedBroadcast, sendOrderedBroadcastAsUser, sendStickyBroadcast, sendStickyBroadcastAsUser, sendStickyOrderedBroadcast, sendStickyOrderedBroadcastAsUser, setTheme, setWallpaper, startActivities, startActivity, startForegroundService, startInstrumentation, startIntentSender, startService, stopService, unbindService, unregisterReceiver, updateServiceGroup
Methods inherited from class android.content.Context
getColor, getColorStateList, getDrawable, getString, getSystemService, getText, obtainStyledAttributes, registerComponentCallbacks, sendBroadcastWithMultiplePermissions, unregisterComponentCallbacks
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ReactContext
```
ReactContext(Context base)
```
- Method Detail
  - initializeWithInstance
```
 void initializeWithInstance(CatalystInstance catalystInstance)
```
    Set and initialize CatalystInstance for this Context. This should be called exactly once.
  - initializeMessageQueueThreads
```
 synchronized void initializeMessageQueueThreads(ReactQueueConfiguration queueConfig)
```
    Initialize message queue threads using a ReactQueueConfiguration.
  - resetPerfStats
```
 void resetPerfStats()
```
  - setNativeModuleCallExceptionHandler
```
 void setNativeModuleCallExceptionHandler(@Nullable() NativeModuleCallExceptionHandler nativeModuleCallExceptionHandler)
```
  - getSystemService
```
 Object getSystemService(String name)
```
  - getJSModule
```
 <T extends JavaScriptModule> T getJSModule(Class<T> jsInterface)
```
  - hasNativeModule
```
 <T extends NativeModule> boolean hasNativeModule(Class<T> nativeModuleInterface)
```
  - getNativeModules
```
 Collection<NativeModule> getNativeModules()
```
  - getNativeModule
```
@Nullable() <T extends NativeModule> T getNativeModule(Class<T> nativeModuleInterface)
```
  - getCatalystInstance
```
 CatalystInstance getCatalystInstance()
```
  - hasActiveCatalystInstance
```
@Deprecated() boolean hasActiveCatalystInstance()
```
    This API has been deprecated due to naming consideration, please use hasActiveReactInstance()instead
  - hasActiveReactInstance
```
 boolean hasActiveReactInstance()
```
  - hasCatalystInstance
```
 boolean hasCatalystInstance()
```
  - getLifecycleState
```
 LifecycleState getLifecycleState()
```
  - addLifecycleEventListener
```
 void addLifecycleEventListener(LifecycleEventListener listener)
```
  - removeLifecycleEventListener
```
 void removeLifecycleEventListener(LifecycleEventListener listener)
```
  - addActivityEventListener
```
 void addActivityEventListener(ActivityEventListener listener)
```
  - removeActivityEventListener
```
 void removeActivityEventListener(ActivityEventListener listener)
```
  - addWindowFocusChangeListener
```
 void addWindowFocusChangeListener(WindowFocusChangeListener listener)
```
  - removeWindowFocusChangeListener
```
 void removeWindowFocusChangeListener(WindowFocusChangeListener listener)
```
  - onHostResume
```
 void onHostResume(@Nullable() Activity activity)
```
    Should be called by the hosting Fragment in onResume
  - onNewIntent
```
 void onNewIntent(@Nullable() Activity activity, Intent intent)
```
  - onHostPause
```
 void onHostPause()
```
    Should be called by the hosting Fragment in onPause
  - onHostDestroy
```
 void onHostDestroy()
```
    Should be called by the hosting Fragment in onDestroy
  - destroy
```
 void destroy()
```
    Destroy this instance, making it unusable.
  - onActivityResult
```
 void onActivityResult(Activity activity, int requestCode, int resultCode, @Nullable() Intent data)
```
    Should be called by the hosting Fragment in onActivityResult
  - onWindowFocusChange
```
 void onWindowFocusChange(boolean hasFocus)
```
  - assertOnUiQueueThread
```
 void assertOnUiQueueThread()
```
  - isOnUiQueueThread
```
 boolean isOnUiQueueThread()
```
  - runOnUiQueueThread
```
 void runOnUiQueueThread(Runnable runnable)
```
  - assertOnNativeModulesQueueThread
```
 void assertOnNativeModulesQueueThread()
```
  - assertOnNativeModulesQueueThread
```
 void assertOnNativeModulesQueueThread(String message)
```
  - isOnNativeModulesQueueThread
```
 boolean isOnNativeModulesQueueThread()
```
  - runOnNativeModulesQueueThread
```
 void runOnNativeModulesQueueThread(Runnable runnable)
```
  - assertOnJSQueueThread
```
 void assertOnJSQueueThread()
```
  - isOnJSQueueThread
```
 boolean isOnJSQueueThread()
```
  - runOnJSQueueThread
```
 boolean runOnJSQueueThread(Runnable runnable)
```
  - handleException
```
 void handleException(Exception e)
```
    Passes the given exception to the current if one exists, rethrowingotherwise.
  - getExceptionHandler
```
 NativeModuleCallExceptionHandler getExceptionHandler()
```
  - hasCurrentActivity
```
 boolean hasCurrentActivity()
```
  - startActivityForResult
```
 boolean startActivityForResult(Intent intent, int code, Bundle bundle)
```
    Same as startActivityForResult, this just redirects the call tothe current activity. Returns whether the activity was started, as this might fail if this wascalled before the context is in the right state.
  - getCurrentActivity
```
@Nullable() Activity getCurrentActivity()
```
    Get the activity to which this context is currently attached, or {@code null} if not attached.DO NOT HOLD LONG-LIVED REFERENCES TO THE OBJECT RETURNED BY THIS METHOD, AS THIS WILL CAUSEMEMORY LEAKS.
  - isBridgeless
```
 boolean isBridgeless()
```
  - getJavaScriptContextHolder
```
 JavaScriptContextHolder getJavaScriptContextHolder()
```
    Get the C pointer (as a long) to the JavaScriptCore context associated with this instance. Usethe following pattern to ensure that the JS context is not cleared while you are using it:JavaScriptContextHolder jsContext = reactContext.getJavaScriptContextHolder()synchronized(jsContext) { nativeThingNeedingJsContext(jsContext.get()); }
  - getJSIModule
```
@Nullable() JSIModule getJSIModule(JSIModuleType moduleType)
```
  - getSourceURL
```
@Nullable() String getSourceURL()
```
    Get the sourceURL for the JS bundle from the CatalystInstance. This method is needed forcompatibility with bridgeless mode, which has no CatalystInstance.
  - registerSegment
```
 void registerSegment(int segmentId, String path, Callback callback)
```
    Register a JS segment after loading it from cache or server, make sure mCatalystInstance isproperly initialised and not null before calling.

Class ReactContext

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class android.content.ContextWrapper

Methods inherited from class android.content.Context

Methods inherited from class java.lang.Object

Constructor Detail

ReactContext

Method Detail

initializeWithInstance

initializeMessageQueueThreads

resetPerfStats

setNativeModuleCallExceptionHandler

getSystemService

getJSModule

hasNativeModule

getNativeModules

getNativeModule

getCatalystInstance

hasActiveCatalystInstance

hasActiveReactInstance

hasCatalystInstance

getLifecycleState

addLifecycleEventListener

removeLifecycleEventListener

addActivityEventListener

removeActivityEventListener

addWindowFocusChangeListener

removeWindowFocusChangeListener

onHostResume

onNewIntent

onHostPause

onHostDestroy

destroy

onActivityResult

onWindowFocusChange

assertOnUiQueueThread

isOnUiQueueThread

runOnUiQueueThread

assertOnNativeModulesQueueThread

assertOnNativeModulesQueueThread

isOnNativeModulesQueueThread

runOnNativeModulesQueueThread

assertOnJSQueueThread

isOnJSQueueThread

runOnJSQueueThread

handleException

getExceptionHandler

hasCurrentActivity

startActivityForResult

getCurrentActivity

isBridgeless

getJavaScriptContextHolder

getJSIModule

getSourceURL

registerSegment